What prize did “the quadruplets” win after performing for their school?

The "quadruplets" won the blue ribbon, as well as the chance to perform in the capital.

But Sor Asunción seemed to have forgotten her own rules. She held up the blue ribbon since no one would quiet down to hear her
announce that we had won. What we did hear her say when the audience finally settled down was that we would be sent along with a
delegation from La Vega to the capital to perform the winning piece for Trujillo on his birthday.